cmd/go: don't panic when go run is passed ... under nonexistent dir
Given a nonexistent directory above a wildcard:
go run ./nonexistent/...
Print this error instead of panicking:
go run: no packages loaded from ./nonexistent/...
Fixes #28696.
Change-Id: Iaa3bc5c78b14ef858d931778e1bc55ca626c5571
GitHub-Last-Rev:
bb1a80483ad26c8cf646cf0900d08cfe49aba535
GitHub-Pull-Request: golang/go#28703
Reviewed-on: https://go-review.googlesource.com/c/148821
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>